1250445730 has 32 divisors (see below), whose sum is σ = 2271426624. Its totient is φ = 495615936.

The previous prime is 1250445709. The next prime is 1250445737. The reversal of 1250445730 is 375440521.

It is a super-2 number, since 2×1250445730² = 3127229047350465800, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1250445692 and 1250445701.

It is not an unprimeable number, because it can be changed into a prime (1250445737) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 599269 + ... + 601351.

It is an arithmetic number, because the mean of its divisors is an integer number (70982082).

Almost surely, 2^1250445730 is an apocalyptic number.

1250445730 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1250445730 is a deficient number, since it is larger than the sum of its proper divisors (1020980894).

1250445730 is a wasteful number, since it uses less digits than its factorization.

1250445730 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2610.

The product of its (nonzero) digits is 16800, while the sum is 31.

The square root of 1250445730 is about 35361.6420716007. The cubic root of 1250445730 is about 1077.3453692899.

The spelling of 1250445730 in words is "one billion, two hundred fifty million, four hundred forty-five thousand, seven hundred thirty".